TLDR: Refused return, save yourself hassle and peace of mind and order on amazon or somewhere else that you trust to treat you well. I bought an alarm system for my shed that is just outside of the window where I had the base station. The description of the system said 30m range, so I hoped those 4 meters would be good enough. Unfortunately the system worked inconsistently, and alarm system like that should provide peace of mind and not leave you in wonder if it will work at all. I contacted the company and asked for refund cause of that, they said that since I tried the product they will not accept the return, and the best they can advise me is to put the item on eBay. That is clearly a violation of UK law and consumer right, so what I did is I sent the item back on my own to them using Royal Mail, paying for return myself and documenting all of that in case I needed to ask PayPal and credit card company for refund. Fortunately returning the package by force seemed to force them to return the money to me, however I needed to use PayPal to refund my postage. I would recommend researching the security systems on their page since it got nice overview of the available hardware, but order on page like amazon or other one you trust where they treat customer better. Bought new system from amazon and it works well, I think it was even cheaper there.